<template>
  <div class="login-bg">
    <div class="login-container">
      <div class="login-header">
        <img class="logo mr10" src="../../assets/img/logo.svg" alt="" />
        <div class="login-title">后台管理系统</div>
      </div>
      <el-form :model="param" :rules="rules" ref="login" size="large">
        <el-form-item prop="username">
          <el-input v-model="param.username" placeholder="用户名">
            <template #prepend>
              <el-icon>
                <User />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
              type="password"
              placeholder="密码"
              v-model="param.password"
              @keyup.enter="submitForm(login)"
          >
            <template #prepend>
              <el-icon>
                <Lock />
              </el-icon>
            </template>
          </el-input>
        </el-form-item>
        <div class="pwd-tips">
          <el-checkbox class="pwd-checkbox" v-model="checked" label="记住密码" />
          <el-link type="primary" @click="$router.push('/reset-pwd')">忘记密码</el-link>
        </div>
        <el-button class="login-btn" type="primary" size="large" @click="submitForm(login)">登录</el-button>
        <p class="login-tips">Tips : 用户名和密码随便填。</p>
        <p class="login-text">
          没有账号？<el-link type="primary" @click="$router.push('/register')">立即注册</el-link>
        </p>
      </el-form>
    </div>
  </div>
</template>

<script setup lang="ts">
import { ref, reactive } from 'vue';
import { useTabsStore } from '@/store/tabs';
import { usePermissStore } from '@/store/permiss';
import { useRouter } from 'vue-router';
import { ElMessage } from 'element-plus';
import type { FormInstance, FormRules } from 'element-plus';
import { loginUser} from '@/api';
import {Lock} from "@element-plus/icons-vue";

const permiss = usePermissStore();
const login = ref<FormInstance>();
const lgStr = localStorage.getItem('login-param');
const defParam = lgStr ? JSON.parse(lgStr) : null;
const checked = ref(!!lgStr);
const router = useRouter();
const param = reactive<LoginInfo>({
  username: defParam ? defParam.username : '',
  password: defParam ? defParam.password : '',
});
const rules: FormRules = {
  username: [
    {
      required: true,
      message: '请输入用户名',
      trigger: 'blur',
    },
  ],
  password: [{ required: true, message: '请输入密码', trigger: 'blur' }],
};
interface LoginInfo {
  username: string;
  password: string;
}

const submitForm = async (formEl: FormInstance | undefined) => {
  if (!formEl) return;

  await formEl.validate(async (valid: boolean) => {
    if (valid) {
      if (!param.username || !param.password) {
        ElMessage.error('用户名和密码不能为空！');
        return;
      }

      try {
        const response = await loginUser(param.username, param.password);
        if (response.code === 1) {
          ElMessage.success('登录成功');
          localStorage.setItem('token', response.data.token);
          localStorage.setItem('vuems_name', response.data.user.username);
          const keys = permiss.defaultList[response.data.user.role === 'admin' ? 'admin' : 'user'];
          permiss.handleSet(keys);
          await router.push('/dashboard');
          if (checked.value) {
            localStorage.setItem('login-param', JSON.stringify(param));
          } else {
            localStorage.removeItem('login-param');
          }
        } else {
          ElMessage.error('用户名或密码错误！');
        }
      } catch (error) {
        console.error('登录请求失败:', error);
        ElMessage.error('登录失败：' + (error.response?.data?.message || '未知错误'));
      }
    } else {
      ElMessage.error('表单验证失败');
    }
  });
};

const tabs = useTabsStore();
tabs.clearTabs();
</script>

<style scoped>
.login-bg {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100vh;
    background: url(../../assets/img/login-bg.jpg) center/cover no-repeat;
}

.login-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
}

.logo {
    width: 35px;
}

.login-title {
    font-size: 22px;
    color: #333;
    font-weight: bold;
}

.login-container {
    width: 450px;
    border-radius: 5px;
    background: #fff;
    padding: 40px 50px 50px;
    box-sizing: border-box;
}

.pwd-tips {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    margin: -10px 0 10px;
    color: #787878;
}

.pwd-checkbox {
    height: auto;
}

.login-btn {
    display: block;
    width: 100%;
}

.login-tips {
    font-size: 12px;
    color: #999;
}

.login-text {
    display: flex;
    align-items: center;
    margin-top: 20px;
    font-size: 14px;
    color: #787878;
}
</style>
